The reason why Wu Zetian moved to Luoyang.

The main reason why Wu Zetian moved to the capital was that she could not solve the problem of grain transportation in the capital.

Wu Zetian gave up Chang 'an, whose capital had been built for many years, and moved to Luoyang. It is not that Chang 'an's advantages in the past have decreased, but that the changes in the new situation have forced her to make such a choice.

One of the reasons why Wu Zetian moved to Luoyang was that Chang 'an, as the capital, was too big to support. As the national capital, it is bound to gather a large population. Being an official in business, peddling husbands and pawns, a large number of royal families and a huge population make Chang 'an look like a bloated fat man. They need a lot of materials. This is difficult for Chang 'an to satisfy himself. Although there is cultivated land here, we need to rely more on imported food to meet our consumption. Besides the eastern part of Luoyang was the grain-producing area of China at that time, the Beijing-Hangzhou Grand Canal built by Yang Di also made it easier for Luoyang to transport grain than Chang 'an.